I originally put 0.00 but I received a letter 12C from the IRS stating that I needed to fill out e through g or at least one of them
First, if you receive health insurance coverage through the federal marketplace you are not allowed to file married-filing-separately. If that was what you did with the tax return for 2023 or 2022 you and your husband will have to go back and file a joint return for the year that you had the form 1095-A for.
If you are filing as single or head-of-household because you lived apart for more than six months at the end of the year then you need to allocate the amounts on form 1095-A between you. Your husband is not allowed to enter the entire form on his return and you are not allowed to leave it off your return. If only the two of you are on the return then you would each enter the numbers from the 1095-A but cut them in half. If there are children on there you need to figure the amoun to put on each tax return by percentage and who is claiming the children.